Increase Microphone Input

Hi,
I have a Shure SM57 microphone that I use for recording trumpet. It sounds great, but very quiet! I have the input volume set to the top, but it still is barely loud enough. Being it is a trumpet I'm recording I usually have to stand at least a foot away from the mic to get a decent sound.

Is there any way to make it louder without getting closer to the microphone? Sorry for the rushed/confusing explanation!

Thanks,
Andrew